Trash or treasure Suzuki GSX R750. This is a 2005 Suzuki GSX R750 the essentially is a white one. Chassis development hasn’t come along as well as tire development. The electronics packages so chassis development kind of went like this whereas tire development. Today’s hyper sport tires are the race tires from eight years ago. That’s the kind of grip level you’re getting. You can get really good bargains on these bikes. The difference between 405 GSXR 750 and 1997 98 is vast. You can get some really good bargains especially as track weapons out of these bikes. The question remains to be seen did I buy trash or did I buy some hidden treasure?
This sad-looking GSXR 750 in Utah that for at least 7 years it has not run. It has been kept in a garage but not a temperature-controlled garage. It was transported here to Northern California and so we put a page post up on Facebook saying Bennett or build it. We remove the bodywork and we dump the engine oil which was the consistency of freshly laid asphalt. We wanted to know if there has any oil in it. At this point in honor of everybody posting builds it we are going to at least do the stage right now. Firstly remove the cover on the right side of the engine and see if the engine will turn over. If it turns over and it has compression we will then continue.
If it does not have any compression at all we will not because the engine is toast and we’re not going to go ahead and just waste a bunch of time. If we try and turn it over and it locks we are not going to continue after that. We get through that stage the next thing is to pull the tank drain. The tank pulls the air filter and airbox and cleans all that out. Clean any and dead animals that may exist inside the engine compartment, wiring loom, and RAM air ducts. Fill it back up I’m not gonna put coolant in it.
I’m gonna go anywhere near that level of intricacy because if we put fresh gas in we put a battery in it. We know it turns over it’s got compression and if it fires up we will then continue on. A little bit of work to do now in stripping everything off the bike. Everything being good the tank and the airbox to make sure all of that is clean. Ready to go ram air ducts I make sure they’re blown out. Take a look under the tank and see if any of the wires have been huge by rodents. So we’ve got a little investigative work to do game on all right. Let’s take ours expect inspection cover off.
There it goes well that’s a good start so this will expose the end of the crank. There no dirt no debris beautifully clean it’s given the condition of the oil now. You need a 14 millimeter on the end of the crank there we go we are in neutral. We know that because we pushed it up on the bench. I’m gonna go both directions make sure the Pistons move both ways. It’s moving pretty smoothly that’s compression gone so that’s encouraging the second compression release. We got compression run all four let’s put them back on so we’re done turning the motor over. It works let’s lock that out now we’ll go further tank off airbox let’s try and unplug the fuel line. I guess over there we got left for connections those breathers to breather hoses. Come on try and get that one day they’ll hold the tank.
Now all the phillips screws that hold the airbox cover together dropped it’s tough to get good help these days. There’s no massive oil leaks of the cylinder head gasket. There are no coolant leaks at all anywhere across the back of the engine. There’s just lots of leaves and dirt and rocks a whole bunch of rocks and leaves down in there. Realistically this just needs a good blowing with a high-pressure air hose. That’s good news turn that off doesn’t keep that on.
Were opening the airbox we’ve got a K&N filter this hasn’t been cleaned and oiled in years. It’s white there’s supposed to be red so let’s lift this side up and have a look at. We’ve got that’s filthy so that needs a good wash and my truck has a K&N in it. I have the cleaning kit that’s pretty dusty in there but no major bits and pieces so that’s all good. I don’t need to pull the airbox off throttle bodies if we look down inside a beautifully clean which is awesome. There’s no dust there’s no debris inside so I’m hoping that’s so clean. The throttles were held open and all that craps going into the engine so given. I very much doubt there’s debris in there but we’ll open the slides up and we’ll see if that’s all clean.
The next thing to do is clean it eventually at this point it’s going to go back. We don’t have any major components in the airbox that need removal so let’s put it all back together. We go put that back in so we know that’s good we’ll put the airbox back on. Get that connected up we’ve got to throw all the old gas away to make sure that’s empty and put fresh gas in. We go to steal a battery well steal it off a thousand CC bike and we’ll put it in. We’ll turn the key on and see if we can get power the other part about an inspection of wiring looms and everything else. It’s super filthy in here but nothing’s chewed nothing’s eaten all the original connections are here everything’s actually factory right.
The fuel injection hose looks in great shape no kinks no cracks from the tank. The breather hose here is X that’s all good fuel injection wiring is all solid nothing’s cracked. We look a little deeper we’re finding more and more positives here which is awesome. Let’s put this back together empty the tank put the tank back on put gas and the battery in it. Let’s turn the key on and see if the dash even lights up. At this point, if not then we’ve got through all the fuses so far so good. Always start with the center one the more swear words you use the better. It works unless you’re a brave little bit of graphite grease to go on the threads.
Everything goes back in it doesn’t hurt to put grease back on it. The breather zone small one in front big one behind the breather hoses are different sizes. Alright so now the pinch clamp goes in the hose fuels has that little pinch clamp. We’ll try this battery here so the key is off killing switches off so that rama tube is actually free of debris. This is the wrong battery cuz it’s short sort of pull. It’s hitting the wire from the ECU so we’re gonna replace the battery. The fuel pump prime’s alright now we know it’ll turn over so clutch in Wow that’s enough it runs now. We’ve got a pile of work now we have a ton of work to do. Forks off triple clamps broken master cylinder reservoir we got to replace oil service in the forks brake fluid. I don’t even want to think what that’s like does it move so we’ll have to pull everything off. The front end of change and service the forks change the brake fluid pull the pistons out of the calipers fresh brake fluid shock. That’s a rebuild kit this is going to be now a ton of work but we can put this to good use. We can do some testing with this bike so it will become a DMT test vehicle and not for what you’re thinking. We have some plans now that work that solidifies our plans which are going to be very interesting for some tire performance reviews.
